CN105355341B - Solid core rod, insulator and manufacturing method - Google Patents

Solid core rod, insulator and manufacturing method Download PDF

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Publication number
CN105355341B
CN105355341B CN201510883861.3A CN201510883861A CN105355341B CN 105355341 B CN105355341 B CN 105355341B CN 201510883861 A CN201510883861 A CN 201510883861A CN 105355341 B CN105355341 B CN 105355341B
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China
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winding
group
inner core
layer
winding group
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CN105355341A (en
Inventor
赵卫生
胡平
郝春功
南无疆
陈铃飞
陈惠�
王明哲
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Beibao Power Composite Co., Ltd.
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Beijing FRP Research and Design Institute Composite Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/38Fittings, e.g. caps; Fastenings therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/14Supporting insulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B19/00Apparatus or processes specially adapted for manufacturing insulators or insulating bodies

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  • Moulding By Coating Moulds (AREA)

Abstract

The invention discloses a solid core rod. The solid core rod comprises an inner core and at least one winding layer, wherein the at least one winding layer is wound outside the inner core; the winding layer comprises a first winding group and a second winding group which are alternatively arranged, the winding angle of the first winding group is 3 to 10 DEG C, the winding angle of the second winding group is 80 to 89 DEG C, and the thickness portion of the first winding group to the second winding group is 7-9:1-3. The invention further provides a manufacturing method of the solid core rod and an insulator comprising the solid core rod. The solid core rod and the preparation method thereof can reduce the solidification cost, saves energy consumption, effectively improve the production efficiency of the core rod, and at the same time, improves the bending performance of the core rod.

Description

Solid mandrel, insulator and manufacture method
Technical field
The present invention relates to a kind of solid mandrel, especially a kind of composite post insulator solid core Rod, and its manufacture method and have employed the insulator of this solid mandrel.
Background technology
Along with extra high voltage line increases year by year in China, the consumption of power transmission and transformation support insulator is also Increase therewith.At present, the support insulator of power transmission and transformation includes three kinds: full porcelain type, porcelain core add Silicon rubber umbrella skirt type, composite inner core additional silicon rubber umbrella skirt type.Full porcelain t shore insulator , easily there is fracture, brittle failure in Heavy Weight, and after electric pressure height, length strengthens.Porcelain core adds silicon rubber It is bonding with ceramic core rod not then to there is external shed silastic material in the support insulator of glue full skirt type Jail, produces the phenomenon of bubble, have impact on electric property and the life-span of product.Along with power transmission and transformation electricity The raising of pressure grade, (the letter below of composite plug additional silicon rubber umbrella skirt t shore insulator Claim " composite post insulator ") consumption accounting increase therewith.
The plug of composite post insulator uses composite to make, and owing to being relatively large in diameter, uses Pultrude process is difficult to a pultrusion.The more a kind of molding mode of plug employing at present is, The little drawing and extruding bar of all size is bundled, carries out overall perfusion, but this kind of technique by In many thinner mandrel structures, its adhesive linkage is too much, occupies in the cross-sectional area of plug Bigger area ratio;The internal generation internal stress of inequality relatively greatly in solidification process, stress is not All cause inside to crack, thus be extremely difficult in actual use preferably use effect Really.
Chinese patent application CN200810235759.2 discloses a kind of ultra-high-voltage post compound inslation Son plug, described plug is made up of rod core and winding pipe, and winding pipe is made up of three layings, Each laying is formed by internal layer and outer layer, and the winding angle of internal layer is at 25 °~35 °, outer layer Winding angle at 55 °~65 °.Inventor finds, such plug is only capable of meeting conventional propping up The requirement of post insulator, but for the post insulator period of the day from 11 p.m. to 1 a.m that the mechanical requirements such as bending property are high is deposited In problem.
Summary of the invention
An object of the present invention is to provide a kind of solid mandrel, and this solid mandrel disclosure satisfy that Bending property requires that high insulator, particularly support insulator use requirement.
The two of the purpose of the present invention are to provide the manufacture method of described solid mandrel, the method energy Access.
The three of the purpose of the present invention are to provide a kind of insulator including above-mentioned solid mandrel, institute State insulator bending property higher.
The solid mandrel of the present invention includes inner core and at least one winding layer, described at least one Winding layer is wrapped in the outside of described inner core;Described winding layer includes that the first winding group and second twines Winding, the winding angle of the first winding group is 3 °~10 °, and the winding angle of the second winding group is 80 °~89 °, and the thickness proportion of the first winding group and the second winding group is 7~9:1~3;Institute The first winding group and the second described winding group stated are alternately arranged.
According to solid mandrel of the present invention, it is preferable that described winding layer is only wound around by first Group and the second winding group are constituted.
Inventor finds, owing to using the winding layer structure of the present invention, is the most specifically wound around The angle of group and thickness proportion so that the bending property of plug is improved significantly.
Solid mandrel according to the present invention, it is preferable that the winding angle of described first winding group is 3 °~8 °, more preferably 5 °~8 °;The winding angle of described second winding group is 82 °~87 °, More preferably 83 °~85 °.Preferably, the thickness ratio of described first winding group and the second winding group Example is 7.5~8.5:1.5~2.5;According to one of the present invention preferred embodiment, described first Winding group is 8:2 with the thickness proportion of the second winding group.
Solid mandrel according to the present invention, it is preferable that the thickness of described first winding group be 4~ 16mm, the thickness of described second winding group is 1~4mm.It is highly preferred that described first twines The thickness of winding is 4.5~15mm, and the thickness of described second winding group is 1~3.5mm.Again Preferably, the thickness of described first winding group is 5~12mm, the thickness of described second winding group Degree is 1.25~3mm.Inventor finds, uses canoe and the thickness proportion of the present invention Time, the bending strength of plug significantly improves.
According to the solid mandrel of the present invention, each winding layer comprise multiple described first winding group and Second winding group, and the first winding group and the second winding group alternately arranged, the quantity root of winding group The thickness being actually needed of core rod determines factually.Preferably, each winding layer comprises 5~12 Individual first winding group and 5~12 the second winding groups.According to the solid mandrel of the present invention, preferably Ground, the thickness of each winding layer is 35~60mm, preferably 40~55mm, more preferably 50~55mm.
According to solid mandrel of the present invention, it is preferable that at least one winding layer described is two Individual above winding layer or more than three winding layers.According to the solid mandrel of the present invention, described solid Plug only includes two winding layers.The first winding group and second that said two winding layer comprises twines The quantity of winding can be identical or different, namely the thickness of each winding layer is different.
According to the solid mandrel of the present invention, the diameter of described inner core can be 80~110mm. The structure of the present invention is especially suitable for the solid mandrel of major diameter, therefore, it is highly preferred that in described A diameter of the 100~110mm of core (such as drawing and extruding bar).
The solid mandrel of the present invention can include that multiple winding layer, multiple winding layer nestings are wrapped in Together.Such as, include that two winding layer the first winding layers and second are wound around when solid mandrel Layer, the first described winding layer is wrapped in the outside of described inner core, and described second winding layer is wound around Outside at described first winding layer;When described solid mandrel includes more than two winding layer, Position relationship between each winding layer is similar.
According to one particularly preferred embodiment of the present invention, described solid mandrel include inner core and Two winding layers, a diameter of the 80 of described inner core~110mm, preferably 100~110mm; The thickness of each winding layer is 35~60mm, preferably 40~55mm, more preferably 50~ 55mm。
Solid mandrel according to the present invention, it is preferable that described inner core uses pure drawing and extruding bar or perfusion Drawing and extruding bar, preferably irrigates drawing and extruding bar.The outer surface of described inner core preferably has screw thread, with It is beneficial to be wound around silk contact with the winding first of inner core.According to one embodiment of the present invention, institute Stating the depth of thread is 0.2mm~0.7mm, preferably 0.3mm~0.6mm, more preferably 0.5mm;Thread pitch is 1mm~6mm, preferably 2mm~4mm, more preferably 3mm。
Solid mandrel according to the present invention, it is preferable that the winding material of described winding layer uses ring Epoxy resins, for example with the non-twist fiber of alkali-free+acid anhydride based epoxy resin system, alkali-free without boron without Twist with the fingers fiber+amine-type cure epoxy-resin systems, the non-twist fiber of alkali-free+amine-type cure epoxy resin System, alkali-free are without the non-twist fiber of boron+anhydrides based epoxy resin system.Preferably, twine described in The winding material of winding layer uses the non-twist fiber of alkali-free+acid anhydride based epoxy resin system, or alkali-free Without the non-twist fiber of boron+anhydrides based epoxy resin system, more preferably alkali-free without the non-twist fiber of boron + anhydrides based epoxy resin system.
Solid mandrel according to the present invention, it is preferable that be coated with between described inner core and described winding layer There is resin, between adjacent winding layer, scribble resin, be beneficial to increase between inner core and winding layer Binding ability.Described resin can use anhydride-cured based epoxy resin system, amine-type cure Epoxy-resin systems etc., it is preferred to use acid anhydride based epoxy resin system.
The present invention also provides for the manufacture method of above-mentioned solid mandrel, comprises the steps:
(1) cleaning: be cleaned processing to the outer surface of described inner core;
(2) winding layer is formed: by the outer surface of resin coating inner core after the cleaning, then Alternately it is wound around the first winding group and the second winding group, then carries out cured, form winding layer.
When the solid mandrel of the present invention includes N (>=2) layer winding layer, including walking as follows Rapid:
(1) cleaning: be cleaned processing to the outer surface of described inner core;
(2) it is wound around for the first time: by the outer surface of resin coating inner core after the cleaning, then Alternately it is wound around the first winding group and the second winding group, described first winding group and the second winding group Winding angle is respectively 3 °~10 ° and 80 °~89 °, described first winding group and the second winding group The ratio of thickness be: 3 °~10 °: 80 °~89 °=7~9:1~3, carry out cured, obtain First winding layer;
(3) n-th is wound around: by the outer surface brushing resin of previous winding layer, is alternately wound around First winding group and the second winding group, described first winding group and the winding angle of the second winding group Be respectively 3 °~10 ° and 80 °~89 °, the thickness of described first winding group and the second winding group it Ratio is: 3 °~10 °: 80 °~89 °=7~9:1~3, carries out cured, obtains N and twines Winding layer;
(4) processing: be processed by product requirement size.
Preferably, described method also includes the step that the outer surface of inner core machines process Suddenly, this step is before step (1).It is highly preferred that described step is at the outer surface of inner core Vehicle Processing goes out screw thread, and the depth of thread is 0.2mm~0.7mm, preferably 0.3mm~ 0.6mm, more preferably 0.5mm;Thread pitch is 1mm~6mm, preferably 2mm~ 4mm, more preferably 3mm.
Preferably, in step (1), described cleaning is to use alcohol wipe.Preferably, adopt Alcohol wipe is dipped in 2-5 time with steamed buns stuffed with sweetened bean paste cloth, preferably 3-4 time;Interval time, 5-15 divided every time Clock, preferably 8-12 minute.
Preferably, in step (2) and (3), the thickness of described first winding group be 4~ 16mm, the thickness of described second winding group is 1~4mm.It is highly preferred that described first twines The thickness of winding is 4.5~15mm, and the thickness of described second winding group is 1~3.5mm.Again Preferably, the thickness of described first winding group is 5~12mm, the thickness of described second winding group Degree is 1.25~3mm.Solid mandrel according to the present invention, it is preferable that the thickness of each winding layer Degree is 35~60mm, preferably 40~55mm, more preferably 50~55mm.
Preferably, in step (3), before carrying out n-th winding, by outside previous winding layer Surface carries out playing rough process.Preferably, with angle grinding machine, outer surface resin-rich layer is ground off, grind off Thickness is 0.2mm~0.8mm, removes chip, cleaning.The same step of described clean method (1) clean method, repeats no more.
Preferably, in step (3), described N=2~4;It is highly preferred that N=2, i.e. it is wound around Two winding layers.
The present invention also provides for a kind of insulator, and described insulator includes above-mentioned solid mandrel.Preferably Ground, described insulator is support insulator.Owing to using the solid mandrel of the present invention, obtain Insulator has excellent bending property.
Compared with existing solid mandrel, in the premise of the winding layer using same thickness and quantity Under, due to the fact that and have employed special angle design and thickness arrangement, and have more excellent Bending property, it is possible to meet the requirement of the support insulator high to mechanical requirements such as bending properties.
Accompanying drawing explanation
Fig. 1 is the core surface structural representation after Vehicle Processing processes of embodiment 1.
Fig. 2 is the solid mandrel structural representation of embodiment 1.
Description of reference numerals is as follows:
1-screw thread;2-drawing and extruding bar inner core;3-the first winding layer;4-the second winding layer.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated, but the protection of the present invention Scope is not limited to this.
In the present invention, between the winding angle of described winding group refers to that winding material and inner core are axially Angle.
1-screw thread;2-drawing and extruding bar inner core;3-the first winding layer;4-the second winding layer.
Embodiment 1
The solid mandrel of the present embodiment includes that drawing and extruding bar inner core the 2, first winding layer 3 and second twines Winding layer 4, the first winding layer 3 is wrapped in the outside of drawing and extruding bar inner core 2, and the second winding layer 4 twines It is wound on the outside of the first winding layer 3.The outer surface of drawing and extruding bar inner core 2 has screw thread 1, screw thread The degree of depth of 1 about 0.5mm, the pitch of screw thread 1 is about 3mm.First winding layer 3 and second twines The material being wound around silk being coiled into 4 is that alkali-free is without boron Non-twisting glass fibre.Drawing and extruding bar inner core 2 straight Footpath is 110mm, and the thickness of the first winding layer 3 and the second winding layer 4 is respectively 50mm.Draw Squeeze between rod inner core 2 and the first winding layer 3, between the first winding layer 3 and the second winding layer 4 All it is brushed with anhydride-cured based epoxy resin.First winding layer 3 and the second winding layer 4 are by alternately First winding group of arrangement and the second winding group composition, the winding angle of the first winding group is 8 °, the winding angle of the second winding group is 85 °, and the thickness of the first winding group and the second winding group Degree ratio is 8:2.
Embodiment 2
The manufacture method of the solid mandrel of embodiment 1:
First the drawing and extruding bar inner core 2 of a diameter of 110mm is carried out surface Vehicle Processing process, car Processing screw thread 1, the depth of thread about 0.5mm, thread pitch controls at about 3mm, then Proceed as follows:
(1) cleaning: first brush off, with hairbrush, the chip that Surface Machining goes out, then use steamed buns stuffed with sweetened bean paste cloth Dipping in alcohol wipe 3 times, every is 10 minutes all over interval time;
(2) it is wound around for the first time: the inner core hair rolling after cleaning is dipped in winding resin at inner core Rod external coating resin, frame is wound on wrapping machine, is alternately wound around the first winding group and the Two winding groups, the winding angle of the first winding group and the second winding group is respectively 8 °, 85 °, thick Degree ratio is: 8 °: 85 °=8:2;When winding thickness reaches 50mm, stop being wound around, carry out solid Change processes, and obtains the first winding layer 3;
(3) second time is wound around: by the outer surface brushing resin of the first winding layer, frame is in winding On machine, alternately it is wound around the first winding group and the second winding group, the first winding group and the second winding group Winding angle be respectively 8 °, 85 °, thickness ratio is: 8 °: 85 °=8:2;Winding thickness reaches During 50mm, carry out cured, obtain the second winding layer 4;
(4) processing.
Comparative example 1
First the drawing and extruding bar inner core to a diameter of 110mm carries out surface Vehicle Processing process, Che Jia Work goes out screw thread, the depth of thread about 0.5mm, and thread pitch controls, at about 3mm, then to carry out Following operation:
(1) cleaning: first brush off, with hairbrush, the chip that Surface Machining goes out, then use steamed buns stuffed with sweetened bean paste cloth Dipping in alcohol wipe 3 times, every is 10 minutes all over interval time;
(2) it is wound around for the first time: the inner core hair rolling after cleaning is dipped in winding resin at inner core Rod external coating resin, frame is wound on wrapping machine, and the first winding group winding angle is 30 °, it is wound to thickness about 25mm;It is wound around the second winding group, the winding of the second winding group again Angle is 60 °, during thickness about 25mm, stops being wound around, carries out cured, obtain first Winding layer;
(3) second time is wound around: by the outer surface brushing resin of the first winding layer, frame is in winding Being wound on machine, the first winding group winding angle is 30 °, is wound to thickness about 25mm; Being wound around the second winding group again, the winding angle of the second winding group is 60 °, thickness about 25mm Time, stop being wound around, carry out cured, obtain the second winding layer;
(4) processing.
Experimental example
The solid mandrel using dye absorption test to obtain embodiment 2 and comparative example 1 method is examined Testing, result shows, defect does not occurs in interiors of products.
The solid mandrel that Example 2 and comparative example 1 method obtain, conventionally distinguishes Installing the umbrella cover of 3 full skirts, metal flange is installed at two ends, respectively obtains embodiment 2 insulator With comparative example 1 insulator.Use " 9.3.1 bending failure load examination in GB/T25096-2010 Test " method, testing example 2 insulator and the bend loading of comparative example 1 insulator, survey The maximum deflection load obtaining comparative example 1 is 19.2KN, and the maximum deflection load of embodiment 2 is 25.6KN。
In the case of without departing substantially from the flesh and blood of the present invention, it may occur to persons skilled in the art that Any deformation, improve, replace and each fall within the scope of the present invention.

Claims (8)

1. a solid mandrel, including inner core and at least one winding layer, it is characterised in that institute At least one winding layer stated is wrapped in the outside of described inner core;Described winding layer includes that first twines Winding and the second winding group, the winding angle of the first winding group is 3 °~10 °, the second winding group Winding angle be 80 °~89 °, and the thickness proportion of the first winding group and the second winding group is 7~9:1~3;The first described winding group and the second described winding group are alternately arranged;
Wherein, at least one winding layer described is two or more winding layer;
Wherein, resin is scribbled between described inner core and described winding layer, between adjacent winding layer Scribbling resin, described resin is epoxy resin.
Solid mandrel the most according to claim 1, it is characterised in that described first is wound around The thickness of group is 4~16mm, and the thickness of described second winding group is 1~4mm.
Solid mandrel the most according to claim 1, it is characterised in that each winding layer bag Containing 5~12 the first winding groups and 5~12 the second winding groups.
Solid mandrel the most according to claim 1, it is characterised in that described solid mandrel Including inner core and two winding layers, a diameter of the 90 of described inner core~110mm;Each winding The thickness of layer is 35~60mm.
Solid mandrel the most according to claim 4, it is characterised in that described inner core straight Footpath is 100~110mm;The thickness of each winding layer is 40~55mm.
Solid mandrel the most according to claim 1, it is characterised in that outside described inner core Surface has screw thread, and the degree of depth of described screw thread is 0.2mm~0.7mm, the pitch of described screw thread For 1mm~6mm.
7. according to the manufacture method of the solid mandrel described in any one of claim 1~6, including Following steps:
(1) cleaning: be cleaned processing to the outer surface of described inner core;
(2) winding layer is formed: by the outer surface of resin coating inner core after the cleaning, then Alternately it is wound around the first winding group and the second winding group, then carries out cured, form winding layer.
8. an insulator, it is characterised in that described insulator includes claim 1~6 One described solid mandrel.
CN201510883861.3A 2015-12-04 2015-12-04 Solid core rod, insulator and manufacturing method Active CN105355341B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106158170B (en) * 2016-06-20 2017-09-22 北京玻钢院复合材料有限公司 The preparation method of core rod of insulator
CN106448958B (en) * 2016-10-25 2017-11-17 北京玻钢院复合材料有限公司 Precast body, core rod of insulator and the preparation method of non-resin winding
CN106298111B (en) * 2016-10-25 2017-11-17 北京玻钢院复合材料有限公司 Core rod of insulator precast body, core rod of insulator and preparation method
CN106531376B (en) * 2016-10-25 2017-11-17 北京玻钢院复合材料有限公司 Precast body, core rod of insulator and preparation method
CN106531378B (en) * 2016-12-12 2018-05-25 北京玻钢院复合材料有限公司 The manufacturing method of solid cylinder
CN106910575B (en) * 2017-03-31 2018-07-03 西安康本材料有限公司 A kind of high-performance post composite insulator plug and its manufacturing method
CN110676001A (en) * 2019-09-20 2020-01-10 江西华洋电瓷制造有限公司 Composite material super-multi-shed insulator composition and manufacturing method thereof

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GB2015053B (en) * 1978-02-24 1982-05-06 Pirelli Submarine cable
WO1999052116A1 (en) * 1998-04-06 1999-10-14 Sumitomo Electric Industries, Ltd. Coaxial cable, multicore cable, and electronics using them
CN201036070Y (en) * 2007-04-30 2008-03-12 无锡华能电缆有限公司 Composite material overhead conductor
CN205177515U (en) * 2015-12-04 2016-04-20 北京玻钢院复合材料有限公司 Solid plug and contain its insulator

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GB2015053B (en) * 1978-02-24 1982-05-06 Pirelli Submarine cable
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CN201036070Y (en) * 2007-04-30 2008-03-12 无锡华能电缆有限公司 Composite material overhead conductor
CN205177515U (en) * 2015-12-04 2016-04-20 北京玻钢院复合材料有限公司 Solid plug and contain its insulator

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Effective date of registration: 20181212

Address after: 277500 South of Beixin West Road, Tengzhou City, Zaozhuang City, Shandong Province (Luban Avenue West, College West Road North)

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Address before: 102101 No. 261 Kangxi Road, Badaling Economic Development Zone, Yanqing County, Beijing

Patentee before: Beijing FRP Research & Design Institute Composite Co., Ltd.